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An Electronically Tunable Single-Layer Reflectarray Antenna Element With Improved Bandwidth
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DOI：10.1109/LAWP.2011.2104934.png)
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摘要
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This letter presents a varactor diode-tuned reflectarray element that achieves an improved element phase bandwidth relative to designs that employ a single resonance for phase tuning. This is accomplished by introducing two resonances in the element while maintaining a single-layer structure. Simulation results based on full-wave simulations compare favorably to experimental measurements inside a waveguide. The unit cell exhibits over 380 of phase agility, 3.5 dB of peak cell loss, and a 2.4% phase bandwidth at 5.4 GHz. In addition, it has the attractive features of using only a single control voltage as well as having a quasi-linear phase versus voltage characteristic.
Keyword:
Antenna arrays
microstrip arrays
reconfigurable antennas
reflectarrays
reflector antennas
varactors
期刊
IF:
4.8
论文数:
1.0W
被引数:
2.8W
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